Data/hora: 06/06/2024 16:21:48

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 04/06/1997
Data da última atualização: | 05/08/2019
Autoria: | NEDEL, J. L.; ULLRICH, S.; PAN, W. L.
Afiliação: | JORGE LUIZ NEDEL, Universidade Federal de Pelotas - UFPel/Departamento de Fitotecnia; STEVEN EDWARD ULLRICH, Washington State University/Plant & Soil Department; WILLIAM LEE PAN, Washington State University/Plant & Soil Department.
Título: | Dry matter and nitrogen accumulation by standard height and semi-dwarf barley isotypes.
Ano de publicação: | 1997
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 32, n. 2, p. 155-164, fev. 1997.
Idioma: | Inglês
Notas: | Título em português: Acúmulo de matéria seca e de nitrogênio por genótipos de cevada com altura normal e reduzida.
Conteúdo: | To assess nitrogen movement from the soil into the plant and within the plant, studies of dry matter and N accumulation are necessary. The objective of this experiment was to study the effect of 30, 60, 90 and 120 lcg of N/ha on dry matter and N accumulation by four standard height-semi-dwarf normal mutant malting barley isotype pairs (Morex, ilazen, Norbert, Andre) and two check éultivars: Steptoe and Klages. Considerable differences among genotypes on dry matter accumulation until anthesis and dry matter lóst during grain fihling period were observed. Genotypic difíerences for pre-anthesis (range: 36.6 to 52.9 mg N/plant) and post-anthesis (range: -2.3 to 10.8 mg N/plant) N accumulation and in total N accumulation (range: 69 to 149.2 mg N/plant in 1987 and 41.3 to 56.5 mg N/ha in 1989) were observed. Within the isotype pairs, consistent differences were detected for post-anthesis and total N accumulation both favoring the standard isotypes. These differences were not affected by fertilizer N leveis. Genotypic dilferences in N remobilization into the grain were also observed. Relationship between N and dry matter partitioning are discussed.
Palavras-Chave: | Nitrogen response; Protein; Resposta ao nitrogenio.
Thesagro: | Hordeum Vulgare; Proteína.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/92300/1/pab28595.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (5722-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS